Method of making hangers



Jan. 8, 1929.

' 1,698,139 J. H. McELROY METHOD OF MAKING HANGERS Filed Nov. 5, 1925 inplace; and

Fatented Jan. 3, 1929.

hll'lh' METHOD or MAKING HANGERS.

Application filed November 3, 1923. Serial No. 672,475.

My invention is concerned with hanger inserts adapted to be placed inconcrete floors, etc., of the character shown in the patent to Hall, No.1,018,490, but which are constructed from malleable tubing by asimplemethod, so that they can be manufactured in quantities much morecheaply than the casting shown in the aforesaid patent.

To illustrate my invention, I annex hereto a sheet of drawings, in whichthe same reference characters are used to designate identical parts inall the figures, of which,

Fig. 1 is a sectional view through a form with concrete poured thereonand with the insert shown in elevation;

Fig. 2 is a View of the insert detached, in side elevation, as seen fromthe right or left of Fig. 1, but on a larger scale;

Fig. 3 is a vertical section of the same on line 33 of Fig. 2, with theattaching screw Fig. i is a top plan view of the same.

In carrying out my invention, 1 cut off from malleable tubing of theproper size and thickness sections of the length desired, which sectionsare of substantially the same length as the finished insert. Thesesections may be sheared or out off as preferred, and their diameterthroughout their length is then represented by that portion a, of thefinished hanger.

I then expand, preferably by the use of dies, one end and a majorportion of the body thereof so that, when this first step is completed,said expanded portion will have the diameter of the portion Z) of thecompleted hanger, and the continuation thereof is indicated by thedotted lines o in Fig. 3. If it is desired slightly to flare the lowerend as indicated at (Z, this can be done at the same time and as part ofthe expanding step. 7 i

I then internally thread the unexpanded portion, as indicated at e, toco-operate with the threaded head 7 of the wood screw 9, which is set inthe form board it before the concrete is poured, and also with whateverthreaded rod or hanger may be placed thereon after the concrete has setand the board h and screw f are removed. 7

Finally, to close the upper end to prevent the entry of the concretewhen it is poured,- and also to furnish additional anchorage,

l: flatten the end of the tube, preferably in i: a press, and preferablyenough to furnish the portion is having the parallel faces, whichportion is inthecompleted insert connected with the portion Z) by theportion Z which expands upwardly in one plane, and contracted upwardlyin a plane at right angles thereto, as would naturally result from thepressure applied to the end to close it as described. v

it will be obvious that the resulting hanger insert has all thedesirable features of the insert of tie aforesaid Hall Patent No.

1,018,490, with the additional advantage of in the-interpretation of thefollowing claims except as may be necessitated by the state of the priorart. I

What I claim as new, and desire to secure by Letters Patent of theUnited States, is:

1. The method of making a hanger from a section of malleable tubing,which consists in (1) internally expanding one end and a majorport-ionof the body thereof; (2) cutting an internal thread on the unexpandedportion; and (3) flattening the outer portion only of the expanded endto close it.

2. The method of making a hanger from a section of malleable tubing,which consists in internally expanding one end and a major portion ofthe body thereof; (2) cutting an internal thread on the unexpandedportion; (3) flattening the outer portion only of the expanded end toclose it; and (4) flaring the threaded end.

In witness whereof, I have hereunto set my hand this 27th day ofOctober, 1923.

' v JOHNTHOWARD"MOELBOY,

